Contrast ratio results for LG 23MP55

Contrast ratio 1523:1
Monitor model LG 23MP55
Submitted 23 Aug 2020 23:57 CEST, by 201.250.*.*
Camera model Nikon D7200
Processing remarks

Warning: Image F-number settings are not the same.

Black
Screen photo
Luminance 0.31 cd/m2
Luminance spread 0.15 cd/m2 (2 standard deviations)
Exposure value –3.08 stops   (aim for –2 to –3)
Exposure spread 0.73 stops
Area used for calculation 0.375 x 0.421
Camera settings Exposure time: 1   ISO: 400   F-number: 3.5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 11
White
Screen photo
Luminance 471 cd/m2
Luminance spread 72 cd/m2 (2 standard deviations)
Exposure value –1.5 stops   (aim for –2 to –3)
Exposure spread 0.22 stops
Area used for calculation 0.375 x 0.421
Camera settings Exposure time: 1/250   ISO: 400   F-number: 5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
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The luminance values in cd/m2 are not very reliable, since camera sensitivities can easily differ up to 50% from their nominal value. Typically, the real luminance is 30% lower than this number. The area used for calculation is chosen such that it corresponds to a viewing angle of ±14° horizontally and ±10.5° vertically, which is equivalent to viewing the screen from a distance of about 1.5 times the diagonal size.

Unfortunately, there is a lot of variation in how cameras use EXIF settings. If photos from your camera your produce unusable results, try coming back in a few days. I review submitted pictures regularly and try to fix problems.